An abstract interface for operators. 
 
AbstractOp * getOp() const 
It returns the operand. 
 
A logical operator that can be used to combine one conditional expressions. 
 
void setOp(AbstractOp *o)
It sets the operand. 
 
A logical operator can be used to combine one or more conditional expressions. 
 
An abstract interface for operators. 
 
UnaryLogicOp(const char *opName=0)
It initializes a new UnaryLogicOp. 
 
virtual ~UnaryLogicOp()
Virtual destructor.